/Engine/Source/Runtime/Engine/Classes/Components/InstancedStaticMeshComponent.h
This is array view version of the UFUNCTION, blueprints do not support ArrayViews at the time of adding this one
virtual bool BatchUpdateInstancesTransforms ( int32 StartInstanceIndex, [TArrayView](API\Runtime\Core\Containers\TArrayView)< const FTransform > NewInstancesTransforms, bool bWorldSpace, bool bMarkRenderStateDirty, bool bTeleport )